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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '41e67bd0944ab21645e45e01936c81960f6a8bf5fba2ea5df4d5f4fd6cfc4dc2' 
  AND token = 'EN0h7N+X3XMPE0oJRjeG9ayQovlHafiedi3uG0g3jpc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}